Quadratic Equations
New Zealand
Level 7 - NCEA Level 2
Solve quadratics by completing the square then fully factorising
Interactive practice questions
By first completing the square, then factorising using the difference of two squares, or otherwise, solve:
$x^2+24x+63=0$x2+24x+63=0
Easy
4min
By first completing the square, then factorising using the difference of two squares, or otherwise, solve:
$x^2-14x+33=0$x2−14x+33=0
Easy
4min
By first completing the square, then factorising using the difference of two squares, solve:
$x^2+38x+105=0$x2+38x+105=0
Easy
4min
By first completing the square, then factorising using the difference of two squares, solve:
$x^2-40x+144=0$x2−40x+144=0
Easy
3min
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